Background: This study aimed to evaluate the reaction of organism of laboratory animals on deuterium-depleted drinking diet. To assess the cell energy metabolism, the effect of a liquid medium with different deuterium contents on isolated liver mitochondria of random bred rats and Wistar rats was studied. Methods: This experimental study on the effect of deuterium-depleted drinking water (DDW) ...

Triiodothyronine (T(3)) and thyroxine (T(4)) were measured by immunoassay in the serum and thyroid hydrolysates of control (group A), mildly iodine-deficient (group B), and severely iodine-deficient rats (group C). These results were correlated with changes in thyroidal weight, (131)I uptake and (127)I content as well as with the distribution of (131)I in Pronase digests of the thyroid. There w...

Using 15N stable isotope as a tracer to quantify N transformation rates in isotope-enrichment experiments improves understanding of the cycle various ecosystems. However, measuring 15N-nitrate (15NO3−) small volumes water for these is major challenge due inconvenience preparing samples by traditional techniques. We developed “REOX/MIMS” method applying membrane inlet mass spectrometry (MIMS) de...

background: to assess accessibility of iodinated salt and urinary iodine concentrations (uic) during pregnancy. this cross-sectional study was carried out between october and december, 2009 in urmia county, west azerbaijan (wa), iran. methods: data on demographic characteristics and iodinated salt accessibility were gathered through a questionnaire at 1st trimester. household salt samples and u...

The Ordovician (Hirnantian; 445 Ma) hosts the second most severe mass extinction in Earth history, coinciding with Gondwanan glaciation and increased geochemical evidence for marine anoxia. It remains unclear whether cooling, expanded oxygen deficiency, or a combination drove Late Mass Extinction (LOME). Here, we present combined iodine sulfur isotope data from three globally distributed carbon...

iodine is an essential trace element in the human diet. the following work presents the latest information concerned with iodine determination in raw milk, in iran. iodine content of milk was determined by sandell-kolthoff method where the samples were taken from holstein dairy cows, in shahrkord, the central part of iran. thirty six samples were taken from transportation tanks in semi industri...

In this paper we report our investigations on the frequency stabilization and frequency measurements of 543 nm HeNe laser. It contains following four di€erent works. (1) Using a metal laser tube we have built an iodine-stabilized 543 nm HeNe laser by the Frequency-Modulation (FM) spectroscopy. The signal-to-noise ratio of the hyper®ne spectrum reached 2 ́ 10 at 1 s sampling time. (2) We have bu...

Multiple myeloma is a disseminated neoplasm of terminally differentiated plasma cells that is incurable with currently available therapies. Although the disease is radiosensitive, external beam radiation leads to significant toxicity due to sensitive end-organ damage. Thus, genetic approaches for therapy are required. We hypothesized that the incorporation of immunoglobulin promoter and enhance...